esp-idf/components/vfs/test/test_vfs_eventfd.c

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/*
* SPDX-FileCopyrightText: 2021-2022 Espressif Systems (Shanghai) CO LTD
*
* SPDX-License-Identifier: Apache-2.0
*/
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#include <errno.h>
#include <sys/select.h>
#include "freertos/FreeRTOS.h"
#include "unity.h"
#include "driver/gptimer.h"
#include "esp_vfs.h"
#include "esp_vfs_eventfd.h"
TEST_CASE("eventfd create and close", "[vfs][eventfd]")
{
esp_vfs_eventfd_config_t config = ESP_VFS_EVENTD_CONFIG_DEFAULT();
TEST_ESP_OK(esp_vfs_eventfd_register(&config));
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int fd = eventfd(0, 0);
TEST_ASSERT_GREATER_OR_EQUAL(0, fd);
TEST_ASSERT_EQUAL(0, close(fd));
fd = eventfd(0, EFD_SUPPORT_ISR);
TEST_ASSERT_GREATER_OR_EQUAL(0, fd);
TEST_ASSERT_EQUAL(0, close(fd));
TEST_ESP_OK(esp_vfs_eventfd_unregister());
}
TEST_CASE("eventfd reject unknown flags", "[vfs][eventfd]")
{
esp_vfs_eventfd_config_t config = ESP_VFS_EVENTD_CONFIG_DEFAULT();
TEST_ESP_OK(esp_vfs_eventfd_register(&config));
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int fd = eventfd(0, 1);
TEST_ASSERT_LESS_THAN(0, fd);
TEST_ASSERT_EQUAL(EINVAL, errno);
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fd = eventfd(0, INT_MAX);
TEST_ASSERT_LESS_THAN(0, fd);
TEST_ASSERT_EQUAL(EINVAL, errno);
TEST_ESP_OK(esp_vfs_eventfd_unregister());
}
TEST_CASE("eventfd read", "[vfs][eventfd]")
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{
esp_vfs_eventfd_config_t config = ESP_VFS_EVENTD_CONFIG_DEFAULT();
TEST_ESP_OK(esp_vfs_eventfd_register(&config));
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unsigned int initval = 123;
int fd = eventfd(initval, 0);
TEST_ASSERT_GREATER_OR_EQUAL(0, fd);
uint64_t val = 0;
TEST_ASSERT_EQUAL(sizeof(val), read(fd, &val, sizeof(val)));
TEST_ASSERT_EQUAL(initval, val);
TEST_ASSERT_EQUAL(sizeof(val), read(fd, &val, sizeof(val)));
TEST_ASSERT_EQUAL(0, val);
TEST_ASSERT_EQUAL(0, close(fd));
TEST_ESP_OK(esp_vfs_eventfd_unregister());
}
TEST_CASE("eventfd read invalid size", "[vfs][eventfd]")
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{
esp_vfs_eventfd_config_t config = ESP_VFS_EVENTD_CONFIG_DEFAULT();
TEST_ESP_OK(esp_vfs_eventfd_register(&config));
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int fd = eventfd(0, 0);
TEST_ASSERT_GREATER_OR_EQUAL(0, fd);
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uint32_t val = 0;
TEST_ASSERT_LESS_THAN(0, read(fd, &val, sizeof(val)));
TEST_ASSERT_EQUAL(EINVAL, errno);
TEST_ASSERT_EQUAL(0, close(fd));
TEST_ESP_OK(esp_vfs_eventfd_unregister());
}
TEST_CASE("eventfd write invalid size", "[vfs][eventfd]")
{
esp_vfs_eventfd_config_t config = ESP_VFS_EVENTD_CONFIG_DEFAULT();
TEST_ESP_OK(esp_vfs_eventfd_register(&config));
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int fd = eventfd(0, 0);
TEST_ASSERT_GREATER_OR_EQUAL(0, fd);
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uint32_t val = 0;
TEST_ASSERT_LESS_THAN(0, write(fd, &val, sizeof(val)));
TEST_ASSERT_EQUAL(EINVAL, errno);
TEST_ASSERT_EQUAL(0, close(fd));
TEST_ESP_OK(esp_vfs_eventfd_unregister());
}
TEST_CASE("eventfd write then read", "[vfs][eventfd]")
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{
esp_vfs_eventfd_config_t config = ESP_VFS_EVENTD_CONFIG_DEFAULT();
TEST_ESP_OK(esp_vfs_eventfd_register(&config));
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int fd = eventfd(0, 0);
TEST_ASSERT_GREATER_OR_EQUAL(0, fd);
uint64_t val = 123;
TEST_ASSERT_EQUAL(sizeof(val), write(fd, &val, sizeof(val)));
TEST_ASSERT_EQUAL(sizeof(val), read(fd, &val, sizeof(val)));
TEST_ASSERT_EQUAL(123, val);
val = 4;
TEST_ASSERT_EQUAL(sizeof(val), write(fd, &val, sizeof(val)));
val = 5;
TEST_ASSERT_EQUAL(sizeof(val), write(fd, &val, sizeof(val)));
TEST_ASSERT_EQUAL(sizeof(val), read(fd, &val, sizeof(val)));
TEST_ASSERT_EQUAL(9, val);
TEST_ASSERT_EQUAL(0, close(fd));
TEST_ESP_OK(esp_vfs_eventfd_unregister());
}
TEST_CASE("eventfd instant select", "[vfs][eventfd]")
{
esp_vfs_eventfd_config_t config = ESP_VFS_EVENTD_CONFIG_DEFAULT();
TEST_ESP_OK(esp_vfs_eventfd_register(&config));
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int fd = eventfd(0, 0);
TEST_ASSERT_GREATER_OR_EQUAL(0, fd);
struct timeval zero_time;
fd_set read_fds, write_fds, error_fds;
zero_time.tv_sec = 0;
zero_time.tv_usec = 0;
FD_ZERO(&read_fds);
FD_ZERO(&write_fds);
FD_ZERO(&error_fds);
FD_SET(fd, &read_fds);
int ret = select(fd + 1, &read_fds, &write_fds, &error_fds, &zero_time);
TEST_ASSERT_EQUAL(0, ret);
TEST_ASSERT(!FD_ISSET(fd, &read_fds));
uint64_t val = 1;
TEST_ASSERT_EQUAL(sizeof(val), write(fd, &val, sizeof(val)));
FD_ZERO(&read_fds);
FD_ZERO(&write_fds);
FD_ZERO(&error_fds);
FD_SET(fd, &read_fds);
ret = select(fd + 1, &read_fds, &write_fds, &error_fds, &zero_time);
TEST_ASSERT_EQUAL(1, ret);
TEST_ASSERT(FD_ISSET(fd, &read_fds));
TEST_ASSERT_EQUAL(sizeof(val), read(fd, &val, sizeof(val)));
FD_ZERO(&read_fds);
FD_ZERO(&write_fds);
FD_ZERO(&error_fds);
FD_SET(fd, &read_fds);
ret = select(fd + 1, &read_fds, &write_fds, &error_fds, &zero_time);
TEST_ASSERT_EQUAL(0, ret);
TEST_ASSERT(!FD_ISSET(fd, &read_fds));
TEST_ASSERT_EQUAL(0, close(fd));
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TEST_ESP_OK(esp_vfs_eventfd_unregister());
}
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static void signal_task(void *arg)
{
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int fd = *((int *)arg);
vTaskDelay(pdMS_TO_TICKS(1000));
uint64_t val = 1;
TEST_ASSERT_EQUAL(sizeof(val), write(fd, &val, sizeof(val)));
vTaskDelete(NULL);
}
TEST_CASE("eventfd signal from task", "[vfs][eventfd]")
{
esp_vfs_eventfd_config_t config = ESP_VFS_EVENTD_CONFIG_DEFAULT();
TEST_ESP_OK(esp_vfs_eventfd_register(&config));
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int fd0 = eventfd(0, 0);
int fd1 = eventfd(0, 0);
int max_fd = fd1 > fd0 ? fd1 : fd0;
TEST_ASSERT_GREATER_OR_EQUAL(0, fd0);
TEST_ASSERT_GREATER_OR_EQUAL(0, fd1);
xTaskCreate(signal_task, "signal_task", 2048, &fd0, 5, NULL);
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struct timeval wait_time;
struct timeval zero_time;
fd_set read_fds;
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FD_ZERO(&read_fds);
FD_SET(fd0, &read_fds);
FD_SET(fd1, &read_fds);
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wait_time.tv_sec = 2;
wait_time.tv_usec = 0;
zero_time.tv_sec = 0;
zero_time.tv_usec = 0;
int ret = select(max_fd + 1, &read_fds, NULL, NULL, &wait_time);
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TEST_ASSERT_EQUAL(1, ret);
TEST_ASSERT(FD_ISSET(fd0, &read_fds));
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uint64_t val = 1;
TEST_ASSERT_EQUAL(sizeof(val), write(fd1, &val, sizeof(val)));
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FD_ZERO(&read_fds);
FD_SET(fd0, &read_fds);
FD_SET(fd1, &read_fds);
ret = select(max_fd + 1, &read_fds, NULL, NULL, &zero_time);
TEST_ASSERT_EQUAL(2, ret);
TEST_ASSERT(FD_ISSET(fd0, &read_fds));
TEST_ASSERT(FD_ISSET(fd1, &read_fds));
TEST_ASSERT_EQUAL(0, close(fd0));
TEST_ASSERT_EQUAL(0, close(fd1));
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TEST_ESP_OK(esp_vfs_eventfd_unregister());
}
static bool eventfd_select_test_isr(gptimer_handle_t timer, const gptimer_alarm_event_data_t *edata, void *user_ctx)
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{
gptimer_stop(timer);
int fd = *((int *)user_ctx);
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uint64_t val = 1;
int ret = write(fd, &val, sizeof(val));
assert(ret == sizeof(val));
return true;
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}
TEST_CASE("eventfd signal from ISR", "[vfs][eventfd]")
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{
esp_vfs_eventfd_config_t config = ESP_VFS_EVENTD_CONFIG_DEFAULT();
TEST_ESP_OK(esp_vfs_eventfd_register(&config));
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int fd = eventfd(0, EFD_SUPPORT_ISR);
TEST_ASSERT_GREATER_OR_EQUAL(0, fd);
gptimer_handle_t gptimer = NULL;
gptimer_config_t timer_config = {
.clk_src = GPTIMER_CLK_SRC_APB,
.direction = GPTIMER_COUNT_UP,
.resolution_hz = 1000000,
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};
TEST_ESP_OK(gptimer_new_timer(&timer_config, &gptimer));
gptimer_alarm_config_t alarm_config = {
.reload_count = 0,
.alarm_count = 200000,
};
gptimer_event_callbacks_t cbs = {
.on_alarm = eventfd_select_test_isr,
};
TEST_ESP_OK(gptimer_register_event_callbacks(gptimer, &cbs, &fd));
TEST_ESP_OK(gptimer_set_alarm_action(gptimer, &alarm_config));
TEST_ESP_OK(gptimer_start(gptimer));
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struct timeval wait_time;
fd_set read_fds, write_fds, error_fds;
FD_ZERO(&read_fds);
FD_ZERO(&write_fds);
FD_ZERO(&error_fds);
FD_SET(fd, &read_fds);
wait_time.tv_sec = 2;
wait_time.tv_usec = 0;
FD_SET(fd, &read_fds);
int ret = select(fd + 1, &read_fds, &write_fds, &error_fds, &wait_time);
TEST_ASSERT_EQUAL(1, ret);
TEST_ASSERT(FD_ISSET(fd, &read_fds));
TEST_ASSERT_EQUAL(0, close(fd));
TEST_ESP_OK(esp_vfs_eventfd_unregister());
TEST_ESP_OK(gptimer_del_timer(gptimer));
}
static void close_task(void *arg)
{
int fd = *((int *)arg);
vTaskDelay(pdMS_TO_TICKS(1000));
TEST_ASSERT_EQUAL(0, close(fd));
vTaskDelete(NULL);
}
TEST_CASE("eventfd select closed fd", "[vfs][eventfd]")
{
esp_vfs_eventfd_config_t config = ESP_VFS_EVENTD_CONFIG_DEFAULT();
TEST_ESP_OK(esp_vfs_eventfd_register(&config));
int fd = eventfd(0, 0);
TEST_ASSERT_GREATER_OR_EQUAL(0, fd);
xTaskCreate(close_task, "close_task", 2048, &fd, 5, NULL);
struct timeval wait_time;
fd_set read_fds, write_fds, error_fds;
FD_ZERO(&read_fds);
FD_ZERO(&write_fds);
FD_ZERO(&error_fds);
FD_SET(fd, &read_fds);
FD_SET(fd, &error_fds);
wait_time.tv_sec = 2;
wait_time.tv_usec = 0;
int ret = select(fd + 1, &read_fds, &write_fds, &error_fds, &wait_time);
TEST_ASSERT_EQUAL(1, ret);
TEST_ASSERT(FD_ISSET(fd, &error_fds));
TEST_ESP_OK(esp_vfs_eventfd_unregister());
}
typedef struct {
xQueueHandle queue;
int fd;
} select_task_args_t;
static void select_task(void *arg)
{
select_task_args_t *select_arg = (select_task_args_t *)arg;
int fd = select_arg->fd;
struct timeval wait_time;
fd_set read_fds;
FD_ZERO(&read_fds);
FD_SET(fd, &read_fds);
wait_time.tv_sec = 2;
wait_time.tv_usec = 0;
int ret = select(fd + 1, &read_fds, NULL, NULL, &wait_time);
assert(ret == 1);
xQueueSend(select_arg->queue, select_arg, 0);
vTaskDelete(NULL);
}
TEST_CASE("eventfd multiple selects", "[vfs][eventfd]")
{
esp_vfs_eventfd_config_t config = ESP_VFS_EVENTD_CONFIG_DEFAULT();
TEST_ESP_OK(esp_vfs_eventfd_register(&config));
int fd = eventfd(0, 0);
TEST_ASSERT_GREATER_OR_EQUAL(0, fd);
select_task_args_t args = {
.queue = xQueueCreate(10, sizeof(select_task_args_t)),
.fd = fd,
};
select_task_args_t ret_args;
xTaskCreate(select_task, "select_task0", 2048, &args, 5, NULL);
xTaskCreate(select_task, "select_task1", 2048, &args, 5, NULL);
uint64_t val = 1;
TEST_ASSERT_EQUAL(sizeof(val), write(fd, &val, sizeof(val)));
vTaskDelay(pdMS_TO_TICKS(100));
TEST_ASSERT(xQueueReceive(args.queue, &ret_args, 0));
TEST_ASSERT_EQUAL(ret_args.fd, fd);
TEST_ASSERT(xQueueReceive(args.queue, &ret_args, 0));
TEST_ASSERT_EQUAL(ret_args.fd, fd);
vQueueDelete(args.queue);
TEST_ASSERT_EQUAL(0, close(fd));
TEST_ESP_OK(esp_vfs_eventfd_unregister());
}